Plow-clevis.



No. 529413'. Patented my la, |899.

S. ILPOULE. PLw CLEVIS.

' (Apnmsion and Apr. s. 1899...- (no Nadel.; 2 sheets-snee; l.

IHlllllillllillillllillllilIl lmlmmllllilmm No. 629,!!3.- ,Patented lu|y` I8,- 1899.v

(Applclt'mn fxled Apr. B. 1899.1.

(No Modal.) I' 2 Shntsf-Sheet 2.

^ 4"NITED Srnrns'filjninN-T Critics.

'sTALEY nrooLII, or MoLINE, ILLINoIs,

AssIGNoR To THE DEERE 'a' COMPANY, orf' SAME PLAGE;

' {Pietri-@EvresrnoIFIcn'rIoN forming 15m of Lenersl Patent No. 629,113, cated-@Iy 1e, Iseo.

I Application led IQQ. ,Serial Nol 712,307. (No model.) A

To al?, whom t may concern:

Be it known that I, STALEYD. POOLE, acitizen of the yUnited States, residing at Moline, in the county of RockIslandand State of Illinois,haye invented certain new and useful Improvements in Plow-*Cle'vises; and I do hereby declare the follow-ingto bea full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it ap# pertains to make and' ,userthe saine.'

This invention `relates to clevis constructions for plows or similar machines, the object being to provide improved means for-securing the desired adjustments to regulate the width and depth of the furrow, convenience in manipulation of parts, strength and durablity, and also reliability of the adjusting 'means being desiderata which have been kept in view in evolving the invention. l

With the above-stated objects in view the invention consists in certain novel features of construction and Y combinations of parts the essential elements of which are recited in the appended claims and several forms of embodiment of which are illustrated in the accompanying drawings and specifically described hereinafter. Figure I represents one complete form of clevis construction in top plan view with some of the parts partially broken away, so as to appear in section. Fig. II shows a section# alized side elevation of the same, the section being taken on line II II of Fig. I. Fig. III shows a cross-section of the front portion of the clevis structure illustrated in Figs.` I and II, the parts appearing in a diiferent adj ust# ment than that shown in said figures. Fig. IV shows a top plan view of members of a clevis structure having a different arrangement for securing lateral adjustments. Fig.

v V shows a section taken on the line V V of Fig. IV.

' loweredges of the beam and saidvplates be- Ing clamped to the latter by means of a bolt b' and al nut b2 at the front end of the beam and also beinggengaged byga bolt c, which v passes throughthe beam and the .plates near the rear end of the latter.A Saidlianged plates are considerably.A widened'vat their forward ends andther'e 'formed 2 with outstanding liangesbi, curvedv transversely of the plates in the arc of a circle and reinforced bywebsb racks b? being formed on these ianges and partaking of thecurvature of the latter, with their teeth pointing rearwardly. Arms d extend along the plates b and are formed at their rear ends with llongitudinal slots d', through which the bolt c passes, saidbolt constituting a pivot for these'arms and the slots permitting longitudinal play of the latter, but

means being provided in the form of a clampin g-nut c' for holding the arms against longitudinal movement, said nut engaging the bolt c and being formed with a handle c2, whereby it can be conveniently manipulated. The said arms d are form'ed to lie closely against the plates b for a distance from their slotted portions and thence are curved outwardly, as shown at d2, so as to pass by the racks b5, said arms being formed on their inner sides with teeth or lugs d4 to engage said racks. These teeth or lugs are in the formof webs spring ing from the inner sides of the arms and shaped at vtheir forward ends in conformity with the spaces between the teeth of the racks which said lugs are designed to occupy. The two lugs thus providedon the arms are 'directly opposite each other, and it will -be understood that when they'are engaged lor interlocked with the racks d5 no pivotal movement of the arms d can take place with respect to the plow-beam. l-Iowever, the angular relation of the arms d to the plow-beam can be readily changed within the range of the racks b5 by simply releasing the clamp-nut c and sliding the arms d rearwardly, whereby the lugs d4 are disengaged from the racks, after which the arms can be swung to the desired position. The arms will then be drawn forward, so as to interlock the lugs d4 with the racks, and the nut c' will be tightened to prevent accidental disengagement of the lugs from the racks. It is to be noted'in this connection that a draft on the arms d in a forward direction tends to maintainthe engagementbetween the lugs df* and IOO the teeth of the racks, giving added assurance of maintenance of the adjustment.

The arms d constitute parts of a clevis member which is completed by a front portion elongated transversely of the'plow-beam in the form of a loop comprising a corrugated front bar d5 and a plain rear bar d6, the latter extending part way across the widened space between the forward portions of the arms d, leaving an opening cZ7, by which said space and the interior of the loop are connected for a purpose which will hereinafter appear. The corrugated bar d5 has a transverse conveX curvature throughout its length, and the rear bar d extends opposite all of the corrugations of the bar The structure is completed by a draft-clevis in the form of two rings e and e at right angles to each other, one for coupling with single or double tree and the other, e', being especially formed for engagement with the corrugated bar d5. This latter ring has a gradually-in'creasing thickness from its point of -joinder with the other ring, so as to provide a double cam edge e for engagement with the bar cls, and the interior of said ring is made somewhat oblong, the obj ect being to provide for engagement of this ring with the corrugations of the bar d5 by forward turning of the draft-clevis and for disengagement by lrearward turning thereof, as illustrated in Fig. III. Vhen turned slightly back from the position to which it would naturally drop in the absence of a forward draft, the doublering clevis can be slid along past the ridges of the corrugated bar d5, so as to position it for engagement with any one of the corrugations, and when opposite the desired corrugation forward turning of the clevis will engage the inner portion of the cam-formed ring with that corrugation by reason of the engagement of the cam edge e" with the bar d, as clearly shown in Fig. II. The ring reaches the corrugated bar d5 in the assemblage of parts by being rst passed over one of the arms d and slid along the same and through the opening dT.

It will be seen that the construction above described provides for lateral adjustment to regulate the amount of land the plow is to take at each furrow without necessitating manipulation of any clamping device and that the draft on the clevis in plowing maintains the adjustment, while at the same time a new relation of parts can be quickly obtained by turning the double-rin g clevis rearwardly and sliding it along the corrugated bar. Of course while I have here shown the lateral elongation of one of the clevis members as on the left-hand side of the plow-beam its position may be reversed, if desired, without change in the construction of parts and without destroying any of their functions.

Vhile, as above stated, one advantage of the form of vconstruction shown in Figs. I, II, and III for securing lateral adjustment resides -in the fact that no clamping device is required to be manipulated, yet it is within the scope of my invention to construct a clevis member as a modification of that shown in Fig. I, in which modified construction the laterally-adjustable draft clevis is arranged to be clamped at its different positions. Such a construction is illustrated in Fig. IV,where in the reference-letter d8 designates arms corresponding in all particulars with the arms d, (shown in Fig. 1,) but which are compounded with a different form of elongated front portion, the same being in the form of a closed loop with plain sides f and f', the latter entirely bridging the widened space between the arms d8. The draft-clevis g is in the form of a twisted ring with end portions in the form of plates g fitting above and below the bars f f and formed with flanges or lugs g2, extending alongside said bars, so as to prevent any pivotal Vmovement of the draftclevis. The latter is connected with the other clevis member by means of a bolt h, which passes through the plates g and the space between the bars f and f', the said plates being formed with square openings, with one of which a squared portion of the bolt engages to prevent its turning with relation to the clevis, the head of the bolt bearing against the outer side of the plate around such opening. A clamping-nut h2 `is applied to the threaded end of the bolt and is formed with a handle h3, whereby it may be manipulated and forced into contact with the other of the plates g', with the effect of clampingv the draftclevis at any position to which it may be brought by sliding it along the barsfand f'.

The parts illustrated in Figs. IV and Varc to be assembled with parts similar to those shown in Figs. I and II, whereby vertical adjustment-s are obtained to regulate the depth of the furrow.

Ofk course it is to be understood that the invention herein disclosed is capable of embodiment in other forms than those illustrated in the accompanying drawings and specifically described.l

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a plow or like machine, the combination with the beam, of plates securedon opposite sides of the same and formed at their outer ends with outstanding ilanges curved transversely of the beam in the are of a circle and having rack-teeth on therear sides; and a clevis member having arms extending on opposite sides of the beam oversaid plates and formed with teeth to engage the racks of the latter, the arms of said clevis memberbeing pivoted to the beam and plates with provision for longitudinal movement, substantially as and for the purpose described.

2. In a plow or like machine the combination of the beam and a clevis member pivoted thereto so as to swing vertically, with provisions for longitudinal movement and also for clamping of the clevis at different adjustments, one of the parts having fiXedly asso- IOO IIC

@eene e l ciated with it a vertically-extending arc-A shaped rack and the other having iixedly associated with it a tooth orlug, and these members being relatively disposed for interlocking by forwardlongitudinal movement of the olevis with respect to the beam; the clevis member having a forward portion beyond the interlocking arc-shaped rack and tooth or lug and elongated transversely of the beam; together with a clevis member engaged with said elongated portion with'provisions for adjustment to different positions longitudinally thereof, substantially as described.

3. In a plow or like machine, the combination with the beam, of a clevis member having arms extending on opposite sides ot the beam and a transversely-elongated front portion in the form of a loop comprising a front ing a ring encircling the corrugated bar of the loop with provision for engagement with and disengagement from the oorrugations by turning of the ring, substantially as described. In testimony whereof I aix my signature in presence of two Witnesses.

' STALEY D. POOLE. Witnesses:

BURTON F. PEER, FRED H. COOPER. 

